3219944660 has 12 divisors (see below), whose sum is σ = 6761883828. Its totient is φ = 1287977856.

The previous prime is 3219944537. The next prime is 3219944677. The reversal of 3219944660 is 664499123.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1453591876 + 1766352784 = 38126^2 + 42028^2 .

It is a super-2 number, since 2×3219944660² = 20736087226925031200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80498597 + ... + 80498636.

It is an arithmetic number, because the mean of its divisors is an integer number (563490319).

Almost surely, 2^3219944660 is an apocalyptic number.

It is an amenable number.

3219944660 is an abundant number, since it is smaller than the sum of its proper divisors (3541939168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3219944660 is a wasteful number, since it uses less digits than its factorization.

3219944660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160997242 (or 160997240 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 44.

The square root of 3219944660 is about 56744.5562146714. The cubic root of 3219944660 is about 1476.6677923333.

The spelling of 3219944660 in words is "three billion, two hundred nineteen million, nine hundred forty-four thousand, six hundred sixty".